Features: OOTDTY and Practical Great for Electronics, Crafts, Jewelry, Watches, etc Specification:The index part set of 20 pieces includes the following sizes:#80 (0.0135"), #70 (0.0280"), #79 (0.0145"), #69 (0.0292"), #78 (0.0160"), #68 (0.0310"), #77 (0.0180"), #67 (0.0320"), #76 (0.0200"), #66 (0.0330"), #75 (0.0210"), #65 (0.0350"), #74 (0.0225"), #64 (0.0360"), #73 (0.0240"), #63 (0.0370"), #72 (0.0250"), #62 (0.0380"), #71 (0.0260"), #61 (0.0390") Mini Drill Bit Length: 105mmBox Size: 110x61mm Quantity: 21pcs/1 setNote: Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you make a bid, due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1pc x Mini Drill Tool20pcs x Drill Bit (Packed in a Box)